Lincoln Electric IM640-A manual Periodic Maintenance, Routine Maintenance, Engine AIR Filter

D-1 MAINTENANCE D-1

WARNING

PERIODIC MAINTENANCE

ELECTRIC SHOCK can kill.

●Do not touch electrically live parts such as output terminals or inter- nal wiring

ENGINE EXHAUST can kill.

● Use in open, well ventilated areas or vent exhaust outside

MOVING PARTS can injure.

●Do not operate with doors open or guards off

● Stop engine before servicing

●Keep away from moving parts

●Remove guards only when necessary and replace when work requiring removal is com- plete.

●Only qualified personnel should install, use, or service this equipment.

ROUTINE MAINTENANCE

At the end of each day’s welding, refill the fuel tank to minimize moisture condensation in the tank. Also, run- ning out of fuel tends to draw dirt into the fuel system. Check the engine crankcase and compressor oil lev- els.

If the fuel supply runs out while the fuel pump is oper- ating, air may be entrapped in the fuel distribution sys- tem. If this happens, bleeding of the fuel system may be necessary. See the engine instruction manual.

COMPRESSOR AIR RECEIVER TANKS - (SAE400 WELD’N AIR ONLY)

Drain the condensation from the tanks after each use by opening the drain valve located at the lower right rear of the welder.

ENGINE AIR FILTER

The engine air filter element is a dry cartridge type. It is located above the engine. It can be cleaned and re- used; however, damaged elements should not be washed or re-used. Remove loose dirt from element with compressed air or water hose directed from inside out. Compressed Air: 100 psi maximum. The filter should never be removed while the engine is running.

1.Blow out the welder and controls with an air hose at least once every two months. In particularly dirty locations, this cleaning may be necessary once a week. Use low pres- sure air to avoid driving dirt into the insulation.

2.The current control reactor brushes are self-lubricating and should not be greased. Keep the contacts clean. This control should be moved from maximum to minimum daily to prevent the controls from sticking.

3.See the engine Instruction Manual for periodic engine maintenance information. Change the crankcase oil at regular intervals using the proper grade of oil as recom- mended in the engine operating manual. Change the oil filter in accordance with the instructions in the engine operating manual. When the oil filter is changed add one quart of oil to the crankcase to replace the oil held in the filter during operation.

4.See the compressor operator’s manual for periodic com- pressor maintenance information. Change the compres- sor oil at regular intervals using only Iowa Mold Tooling Co., Inc. (IMT) synthetic compressor oil as recommended in the compressor operating manual.

CAUTION

The use of any other oil causes excessive carbon build up, and will void the warranty on the compressor.

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5.Belts tend to loosen after the first 30 or 40 hours of oper- ation. Check the cooling fan belt and tighten if necessary. DO NOT OVER TIGHTEN. The compressor belt does not require any adjustment.

BEARING MAINTENANCE

This welder is equipped with a double-shielded ball bearing having sufficient grease to last indefinitely under normal ser- vice. Where the welder is used constantly or in excessively dirty locations, it may be necessary to add one-half ounce of grease per year. A pad of grease one inch wide, one inch long and one inch high weighs approximately one-half ounce. Over greasing is far worse than insufficient greasing.

When greasing the bearings, keep all dirt out of the area. Wipe the fittings completely clean and use clean equipment. More bearing failures are caused by dirt introduced during greasing than from insufficient grease.

SAE400 & SAE400 WELD’N AIR